swift 开发过程中遇到的疑难杂症

1. pod ‘GoogleSignIn' , 工程编译过程中遇到一个问题：Cannot find protocol declaration for 'GIDSignInDelegate'，
   解决方案：在桥接文件 Project-Bridging-Header.h 中导入头文件

#import <GoogleSignIn/GoogleSignIn.h>

原因在于库是OC代码，需要通过桥接swift编译器才能找到对应的类文件

2. target overrides theSWIFT_OPTIMIZATION_LEVELbuild setting defined in,

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解决办法：project->target->build setting-> 搜索 关键词，点击选项，选other 填写$(inherited)
参考文章：https://segmentfault.com/a/1190000037439936###，步骤相当清晰。

3. Xcode 代码提示没有了
   环境：xcode12.1 macos11.4
   

   解决办法： image.png
   在Xcode->Window->Projects选中你的项目 xxx.xcworkspace

4. 库不兼容，需要证书签名 xcode 12.4 macos 11.4

dyld: Library not loaded: /usr/local/opt/glew/lib/libGLEW.2.2.dylib
  Referenced from: /Users/book/Library/Developer/Xcode/DerivedData/opengl_-_2021.07.19-dtqpjvlknxgamgandafumvxkobbe/Build/Products/Debug/opengl - 2021.07.19
  Reason: no suitable image found.  Did find:
    /usr/local/opt/glew/lib/libGLEW.2.2.dylib: code signature in (/usr/local/opt/glew/lib/libGLEW.2.2.dylib) not valid for use in process using Library Validation: mapped file has no cdhash, completely unsigned? Code has to be at least ad-hoc signed.

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